#15899D

Closest named color: Teal Blue (#01889F). oklch(58.1% 0.097 213.3), rgb(21, 137, 157).

Black text reads best on this color (5.09:1).

About this color

#15899D is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 58%, its chroma 0.097 and its hue 213°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Blue (#01889F), ΔE 0.007 away. Black text reads best on it, at 5.09:1.

Hue family	Teals and cyans
Lightness	medium-dark (58%)
Chroma	moderately saturated (0.097)
Temperature	cool
Nearest name	Teal Blue (#01889F)
Black text	5.09:1
White text	4.12:1

Values

HEX	#15899D
RGB	rgb(21, 137, 157)
HSL	hsl(189, 76%, 35%)
OKLCH	oklch(58.1% 0.097 213.3)

Contrast

WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.

Pair	WCAG 2	Result	APCA	APCA guidance
White text on #15899D	4.12:1	AA large text	Lc -73.4	Content text, not long reading
Black text on #15899D	5.09:1	AA	Lc 36.2	Non-text elements, placeholder text
#15899D text on white	4.12:1	AA large text	Lc 67.9	Content text, not long reading
#15899D text on black	5.09:1	AA	Lc -33.8	Non-text elements, placeholder text

Tints and shades

A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 600.

Step 50
50

#F1F6F8

oklch(97% 0.006 223.5)
Step 100
100

#E1ECEF

oklch(93.6% 0.012 215.8)
Step 200
200

#C8DEE3

oklch(88.6% 0.024 212.9)
Step 300
300

#A1C9D2

oklch(81% 0.044 212.9)
Step 400
400

#6BACBB

oklch(70.6% 0.07 214)
Step 500
500

#3B97AA

oklch(63% 0.09 213.8)
Step 600
600 (this color)

#15899D

oklch(58.1% 0.097 213.3)
Step 700
700

#006D7E

oklch(49.1% 0.086 213.3)
Step 800
800

#005967

oklch(42.6% 0.075 213)
Step 900
900

#114954

oklch(37.6% 0.058 213.9)
Step 950
950

#0D2B31

oklch(27% 0.037 212.9)

Export this scale for Tailwind in the Tailwind colors tool

#15899D with color blindness

Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.

Vision	Seen as	Shift (ΔE)
Protanopia (no red cones)	#7A849E	0.088
Deuteranopia (no green cones)	#69789D	0.079
Tritanopia (no blue cones)	#00918F	0.038
Achromatopsia (no color)	#7D7D7D	0.098